Thermometer attachment for automobiles



Feb. 6, 1923. v

H. Y. NORWOOD; THERMOMETER ATTACHMENT FOR AUTOMOB LES,

FILED MAR. 31 I919.

625 A? TORNEYS Patented Feb. 5, 192&

COMPANIES, OF ROCHESTER, NEW

ear

HARLEY Y. NORWGOD, OF ROCHESTER, NEW YORK, ASSIGIYOR T0 TAYLOR INSTRUMENT YORK, .51. CORYOBATION OF NEW YORK.

THERMOMETER ATTACHMENT FOR AUTOEZOBILES.

* Application filed March 31, 1919.

'T 0 all whom 2'25 may concern Be it known that I, HARRY Y. Nonwooma citizen of the United States, and resident of ochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Thermometer Attachments for- Automobiles; and I do hereby declare the following to be a full, clear, and exact description of the same, ref-' erence being had'to the accompanying drawings, forming a part of this specification, and to the reference characters marked thereon.

This is an invention in temperature indicating devices and particularly the variety of such devices designed for indicating the temperature of the fluid of the engine cooling system of motor vehicles. One'object of the invention is the provision of a simple, economical and convenient instrument arranged to indicate at all times in full view on the dash or instrument board of the vehicle the temperature of the cooling fluid, as a warning against freezing in cold weather, or, when the temperature of the fluid becomes excessive, against overheating in the; motor due to lack of lubrication, or lack of circulation of the cooling fluid, or other trouble. Another object is the provision of means or" this character which indicates the proper adjustment of the shutter or other device for controlling the admission of cooling air through the radiator, and thereby controlling the temperature of the cooling fluid. Another object is the provision ofa device of this nature which may be applied to any motor vehicle and )vhich is so constructed that its major parts may be quickly and conveniently detached from one vehicle and attached to another. Still a further object is an arrangement which shows quickly and accurately the temperature of the cooling fluid at that point in the circulation which best indicates the condition of the motor. To these and other ends the invention consists in certain improvements and combinations of parts, all as will be hereinafter more fully described, the novel features being pointed out in the claims at'the end of the specification.

In the drawings:

Figure 1 is a partly sectional-side elevation showing the invention applied to a motor vehicle.- i

Figure 2 is a vertical section on the line ter.

tact between the adjacent surfaces.

Serial No. 286,285.

2f-2f of Figure 3 of the nipple for insert10n 1n the fluid system.

igure 3 is the same on the line 3-3 of Figure 2.

igure 4: is a view similar to F1gure3 but enlarged and showing additional parts in section.

Figure 5 is a horizontal sectional view on the line 5*--5 of Figure 4.

Figure 6 is-a face view of the indicating device attached to the instrument board of the vehicle.

The embodiment preferred tratmg the principles involved,

the usual automobile con-' struction having the fluid cooled motor 10, the cooling system of which includes a conduit 11 connecting the engine jacket with the radiator 12 through the rubber tubing 13. A shutter or damper device such as is fre quently employed is controlling the admission of air to the radiator surface. A portion of the'rubber tubing is cut away adjacent its center to allow of the insertion of a nipple M'the ends of which are fixed or clamped in the adjoining ends of the rubber tubing in any suitable manner and which is provided adjacent its center with a receptacle or tube 15 prefeu ably extending transversely nipple in position to contact the circulating Tube 15 facilitate the directly with has preferably thin walls to conduction of heat therethrough and is fixed at its ends in the walls of the nipple, so as to make a fluid tight connection with the latter.

A thermometer bulb 16 is adapted to fit closely within tube-15, extending. --substantially across the width of the nipple and having a shoulder 17 which into the latter. Tube 15 is vided at its upper end with a threaded portion 18 which is adapted to be engaged by a nut 19 slidably carried by the thermometer bulb and adapted when screwed on to the upper end of tube 15 to thrust the'bulb homeiinto the tube, the tube and bulb having a slight taper if desired to insure close con- Communicating with the bulb atthe outer end of the latter is a tube 20, capillary type which passes through an opening 21 in the dash board of the vehicle indicated at l2 for through the fluid .passing through the latlimits its entry preferably pro preferably of the a vehicle by forming" an opening;

and communicates at its other end with an indicating device 22 detachahly secured to the instrument board '23 of the vehicle; This indicating, device has a usual dial 524 over which a pointer 25 adapted to he moved under influence of the pressure exertedby any suitable tluid in the bulb and capillary tube previously described. The means tor detachahly securing this device on the instrument hoard com 'irises bayoi'wt slots 26 formed in the face plate 27 ot the device andeugaging screws 28 projecting from the instrument board, The 't'ace plate 27 is ilso provided with lugs or finger pieces 29 by means of which a device may be rotated to disengage it from the screws 28 in Order that the device may be removed from the board. If desired a clamping screw 30 'may he provided in the face plate for engagement with the instrument board to clamp the device in place after attachment to the board.

It is apparent from the above described construction in connection with the drawings that nipple 14 may be readily inserted in the circulating i'luid system of any automobile of usual type without material alteration of the parts or interference with the circulation of the fluid. and that the thermometer bulb 16 may be inserted in the receptacle in the nipple and the indicating device attached to the dash board of the in the latter to receive it and attaching to the board the screws 28.

The bulb of the thermometer, being located in the path of the circulatio ,fluid at the point where the latter passes from the engine to the radiator is in position to quickly and. accurately respond to the temperature of the fluid which at this time corresponds most closely with the temperature of the engine itself. The indicator is conveniently located on the dash in full view of the driver at all times so that it ves as a warning in cold weather oi? the approach of the temperature of the. fluid to the treezing point or in case of excessive temperature in the circulatin; tluid as a warning that the engine is becoming overheated, due to lack of lubrication or oi circulation of the cooling fluid or other tronhle in the motor.

The invention is particularly useful in conjunction with an adjustable shutter or damper device for controlling the admission of air to the radiator surface and thereby controlling the temperature ot the cooling fluid, in that the constant indication' which it ailords ot' the temperature oi the fluid serves as a check on of the shutter device, indicating whether the latter is properly adjusted, or should he further opened or closed. The condition of the cooling fluid may thus he controlled to maintain quite uniformly the temperature desired.

The instrument may be quickly and conveniently detached from one vehicle and attached to another, it being merely necessary to provide the latter with a nipple 14 in the cooling system of the motor and with the above described arrangement of the instrument. board to receive the indicating device.

I claim as my invention:

The combination with a fluid cooled in- 'ternal combustion motor having a cooling fluid jacket, a radiator and a hose connection between said jacket and radiator, of a tubular nipple having its ends adapted for insertion in the onus of sectional portions of said hose connection to form a part oi the latter connection, a socket receptacle fixed in and extending across said nipple tl'irough the path otithe cooling: fluid and having one end open and the other closed, a thermometer'lnllb detachahly fitted in the open end of said receptacle, :1 thermometrie indicator, and an extended flexible conductor connecting said bulb and indicator.

HARRY Y. nonivoon:

the manipulation 

